Cantata "Warum betrübst du dich, mein Herz", BWV 138 - Arr. for Solo Piano by J. Wiener : J.S. Bach: Cantata "Warum betrübst du dich, mein Herz", BWV 138 - Arr. for Solo Piano by J. Wiener - 1. Warum betrübst du dich, me